在WPF/C#应用中用WinSCP实现本地到NAS的单向文件同步

Hey Sebastian, let's get this sync setup sorted out for you! I see you're stuck on choosing the right protocol and fixing your WinSCP code to sync C:\Apps to your NAS share. Here's a step-by-step breakdown:

1. Pick the Correct Protocol #

Your NAS uses a Windows file share (SMB/CIFS) (the \\server\share path format gives this away), not FTP. WinSCP fully supports SMB, so you'll need to switch your protocol setting to Protocol.Smb.

2. Fix SessionOptions Configuration #

Your original code has a couple of small but critical issues with connection settings. Here's the corrected version:

var sessionOptions = new SessionOptions
{
    Protocol = Protocol.Smb,
    HostName = "192.168.1.20", // Remove the leading \\ here—just use the raw IP
    UserName = "Sebastian",
    Password = "MyNasPassword",
    RemotePath = "/Sebastian/Backup" // WinSCP uses forward slashes for SMB paths
};

• HostName: Ditch the UNC prefix (\\)—WinSCP handles SMB paths separately via RemotePath
• RemotePath: Maps directly to your NAS share \\192.168.1.20\Sebastian\Backup using forward slashes

3. Implement the One-Way Sync #

With your session settings fixed, use WinSCP's SynchronizeDirectories method to run the one-way sync from your local folder to the NAS. Here's a complete, ready-to-use code example:

using WinSCP;

try
{
    var sessionOptions = new SessionOptions
    {
        Protocol = Protocol.Smb,
        HostName = "192.168.1.20",
        UserName = "Sebastian",
        Password = "MyNasPassword",
        RemotePath = "/Sebastian/Backup"
    };

    using (Session session = new Session())
    {
        // Connect to the NAS share
        session.Open(sessionOptions);

        // Run one-way sync: local → remote
        SynchronizationResult syncResult = session.SynchronizeDirectories(
            SynchronizationMode.Remote, // Sync local changes to remote
            @"C:\Apps",
            sessionOptions.RemotePath,
            removeFiles: true // Set to false if you don't want to delete extra files on NAS
        );

        // Check for sync errors
        syncResult.Check();

        // Optional: Log sync actions (useful for debugging in your WPF app)
        foreach (SynchronizationEventArgs e in syncResult.Args)
        {
            System.Diagnostics.Debug.WriteLine($"Sync action: {e.FileOperation} | File: {e.FileName}");
        }
    }
}
catch (Exception ex)
{
    // Handle errors in your WPF app (e.g., show a message box to the user)
    System.Windows.MessageBox.Show($"Sync failed: {ex.Message}", "Error", System.Windows.MessageBoxButton.OK, System.Windows.MessageBoxImage.Error);
}

• SynchronizationMode.Remote: Ensures changes flow only from your local C:\Apps to the NAS (one-way sync as you requested)
• removeFiles: Set to true if you want to delete files/folders on the NAS that no longer exist locally; keep it false if you want to preserve those files.

4. Troubleshooting Tips #

• Double-check that your NAS has SMB/CIFS service enabled (most devices have this on by default, but verify in your NAS settings)
• Confirm the user Sebastian has read/write permissions on the Sebastian/Backup share
• Make sure no firewall is blocking SMB traffic (port 445) between your machine and the NAS
• Test accessing the NAS share via File Explorer first to confirm your username/password works

内容的提问来源于stack exchange，提问作者Sebastian